How To Install Numix Icon Theme Circle
Type in the following commands then hit Enter after each:
sudo add-apt-repository ppa:numix/ppa
sudo apt-get update
sudo apt-get install numix-icon-theme-circle
How To Install Numix Icon Theme Circle 0.2 On Ubuntu 14.04,13.10,12.10,12.04, Linux Mint 16,14,13, Elementary OS And Derivative Systems